kuromoji/test/util/ByteBuffer.js

JavaScript implementation of Japanese morphological analyzer

/*
 * Copyright 2014 Takuya Asano
 * Copyright 2010-2014 Atilika Inc. and contributors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

var expect = require("chai").expect;
var ByteBuffer = require("../../src/util/ByteBuffer");

describe("ByteBuffer static methods", function () {
    var byteBuffer;

    beforeEach("Build", function () {
        byteBuffer = new ByteBuffer(50);
    });

    it("putShort() and getShort()", function () {
        var v = -413;
        byteBuffer.putShort(v);
        expect(byteBuffer.position).equals(2);
        var got = byteBuffer.getShort(0);
        expect(got).equals(v);
    });

    it("putString() and getString() 2 bytes UTF-8", function () {
        var str = "âbcde";
        byteBuffer.putString(str);
        // 2 bytes x1 + 1 byte x4 + 1 byte (null character) - 1 (this is zero-based index) + 1 (next position)
        expect(byteBuffer.position).equals(7);
        var got = byteBuffer.getString(0);
        expect(got).equals(str);
    });

    it("putString() and getString() 3 bytes UTF-8", function () {
        var str = "あいうえお";
        byteBuffer.putString(str);
        // 3 bytes x5 + 1 byte (null character) - 1 (this is zero-based index) + 1 (next position)
        expect(byteBuffer.position).equals(16);
        var got = byteBuffer.getString(0);
        expect(got).equals(str);
    });

    it("putString() and getString() 4 bytes UTF-8", function () {
        var str = "𠮷野屋";
        byteBuffer.putString(str);
        // 4 bytes x1 + 3 bytes x2 + 1 byte (null character) - 1 (this is zero-based index) + 1 (next position)
        expect(byteBuffer.position).equals(11);
        var got = byteBuffer.getString(0);
        expect(got).equals(str);
    });

    it("too long string against buffer size", function () {
        var str = "あいうえおかきくけこさしすせそたちつてと"; // 60 bytes
        byteBuffer.putString(str);
        expect(byteBuffer.position).equals(61);
        var got = byteBuffer.getString(0);
        expect(got).equals(str);
    });
});